<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

</body>
<script>
    // 3 2 4 1
    setTimeout(() => {
        console.log(1)
    }, 0)
    Promise.resolve().then(() => {
        console.log(2)
    })
    Promise.resolve().then(() => {
        console.log(4)
    })
    console.log(3);
</script>
</html>